Thirty (30) years ago, late Apollo astronaut and moonwalker James Irwin took many expeditions into Turkey in the 1980s to find artifacts or other remains of Noah"s Ark and recorded all his data (I read one of the books, may still have it). On top of Mt. Ararat, a huge rectangular wooden sea vessel was found buried in the ice. During springs when the ice thaws more than in other years, more of the wood emerges. Carbon testing for age, if correct, places the age of the vessel at the time we suppose for the Great Flood. The wood is consistent with wood found in Middle Eastern countries. However, searches in the 2000s have focused on some other anomaly (may be a shadow), without completing the investigation of the wooden vessel.
Astronaut Irwin's widow Mary keeps and has leant out data and photos for reports and presentations on Noah's Ark and Mt. Ararat as its landing site. Attorney Porcher Taylor, III has written extensively on this as well.
James Irwin was convinced the vessel he found is the ark. More investigation is needed in future.
As for animals, insects, birds, fish - we discover new species every day. Who's to say they are not being created or emerging in this very decade? Polar bears need not have existed in Noah's time, as mammoths and dinosaurs do not exist now - except crocodiles and small lizards that look like dinos. Maybe they got small.